SIG shares jump as it forecasts a return to profit A look at the major movers on the London market on Wednesday SIG PLC (LON:SHI) has come in from the cold sooner than expected. The insulation specialist said January and February had seen a solid start to the year, with sales volumes then picking up so that March and April traded ahead of expectations. So it now expects to deliver an underlying profit in the first half, turning round its losses more quickly than expected. It said: "Whilst the evolving COVID-19 backdrop will continue to create uncertainty in the short term, more so in our EU markets than the UK, the strong demand across territories and sectors in the first four months of the year was encouraging and gives the board increased confidence for the full year performance...